erupt in WordNet English dictionary

1. become active and spew forth lava and rocks
   "Vesuvius erupts once in a while"
   erupt  belch  extravasate 
   
2. force out or release suddenly and often violently something pent up
   "break into tears"; "erupt in anger"
   break  burst  erupt 
   
3. erupt or intensify suddenly
   "Unrest erupted in the country"; "Tempers flared at the meeting"; "The crowd irrupted into a burst of patriotism"
   erupt  irrupt  flare up  flare  break open  burst out 
   
4. become raw or open
   "He broke out in hives"; "My skin breaks out when I eat strawberries"; "Such boils tend to recrudesce"
   erupt  recrudesce  break out 
   
5. start abruptly
   "After 1989, peace broke out in the former East Bloc"
   erupt  break out 
   
6. break out
   "The tooth erupted and had to be extracted"
   erupt  come out  break through  push through 
   
7. start to burn or burst into flames
   "Marsh gases ignited suddenly"; "The oily rags combusted spontaneously"
   erupt  ignite  catch fire  take fire  combust  conflagrate 
   
8. appear on the skin
   "A rash erupted on her arms after she had touched the exotic plant"
   erupt